摘要
The plastic deformation and the ultrahigh strength of metals at the nanoscale have been predicted to be controlled by surface dislocation nucleation. In situ quantitative tensile tests on individual 〈111〉 single crystalline ultrathin gold nanowires have been performed and significant load drops observed in stress-strain curves suggest the occurrence of such dislocation nucleation. High-resolution transmission electron microscopy （HRTEM） imaging and molecular dynamics simulations demonstrated that plastic deformation was indeed initiated and dominated by surface dislocation nucleation, mediating ultrahigh yield and fracture strength in sub-lO-nm gold nanowires.
塑料变丑并且超离频在 nanoscale 的金属的力量被预言了被表面脱臼成核控制。在 situ，个人 111 单个水晶的 ultrathin 黄金 nanowires 上的量的张力的测试被执行了，重要负担落下在压力紧张曲线观察了建议如此的脱臼成核的出现。高分辨率的传播电子显微镜学(HRTEM ) 成像和分子的动力学模拟证明那塑料变丑被表面脱臼成核确实开始并且统治，调停超离频在 sub-10-nm 金牌 nanowires 的收益和破裂力量。
